franklin



(No Model.) -2 Smets-sheet 1.. J. FRANKLIN.

- LAMP.

No. 395.969. Patented Jan. a, 1889.

Fig. f. Fig. Il.l

('No` Model.) v 2 Sheets-Sheet 2.

' J. FRANKLIN.

LAMP.

No. 395,969. Patented Jan. 8, 1889.

Fig. VL

N. PETERS1 ?hnln- Lilhugnphef, Walhngion. D. C.

` UNITED STATES l PATENT EEicE.

.IOIIN FRANKLIN, OF CINCINNATI, OHIO.

LAlVl P.

SPECIFICATION forming part of Letters Patent No. 395,969, dated January 8, 1889. Application filed February '7, 1888. Serial No. 263,306. (No model.)

To @ZZ whom t may concern.-

Be it known that I, JOHN FRANKLIN, of Cincinnati, Hamilton county, Ohio, have invented new and useful Improvements in Lamps, of which the following is a specification.

My invention relates to improvements in those shadowless gas-lamps in which an inverted annular burner (protected from ascending airgusts by al1-inverted globe surrounds an inverted tubular deflector which becomes incandescent in use, and which constitutes the flue-throat, and in which the entering gas is preheated by contact with the flue-walls, and both it and -the draft-air supplied in divided and cqualized currents wholly `from above.

In the accompanying drawings, Figure I is a side elevation, and Fig. II is an axial section, of a lamp illustrating my invention. Figs. III and IV are sections on the lines III III and IV IV of Fig. II, respectively. Figs. V and VI are partial sections on the lines V V, Fig. VIII, and VI VI, Fig. VII, respectively. Figs. VII and VIII are horizontal. sections which show the draft-air-controlling register in two different positions. Fig. IX represents a modification of the gasajutage. Fig. X is a section of part of the globe-holder. Fig. XI is a partially-sectionized side view of my lamp adapted for outdoor use.

My lamp is suspended from the ceiling or a bracket by its gas-pipe l., which may have a flexible union, 2, so as to permit the lamp to hang plumb, and a customary stop and regulating cock, 2. It may also havea current-governor, 4. The gas-pipe l separates below into branches 5, that discharge into an annular chamber, G, between flue 7 (which is located centrally of thelamp) andan external shell, S.

In order to both preheat and divide into numerous symmetrical st'reamlets the entering gas, the annular chamber 'U communicates all around the flue by means of vertical channels 9 in the outer liuc-wall between vertical flutings or ribs distributed equally around the wall with an annular sediment-chamber, IO, which is separated from the concentric annular distributing-chamber II by removable annular Aforaminous screen I2, which detains in said chamber l0 the grosser impurities that would beliable to choke the burnertubes.

The burn er-tubes 13 are arranged in an annular group whose tops are some distance above the Hoor of the annular chamber Il, through which said tubes extend perpendicularly downward into a ring, l5, which has a series of gas-ducts, 1G, that. correspond to the orifices of said burner-tubes, and which communicate below with like orifices of as many tips, IS, of lava or like refractory material y space, 23, which receives equally at every part of it constant accessions of descending draft-air, which take the place of the vitiated portions that escape into the flue with the other products of combustion.

Attached to the lower end of the fine 7 and ljiartially lining the same a tubular deliector, 24, composed of any suitable substanee`such as highly-refractory lire-tile. This detlector constitutes the throat of the flue, and, becoming in use heated to incandescenee, operates to perfect the combustion and to increase the luminosity, while at the same time protecting the flue 7 from direct contact with the flames.

The deflector is attached by any suitable means-such as by screws 92, or by a bayonet-joint. Said detlector preferably extends vsome distance lower than the gas-ajutage's,

in order that the main portion of the llames may have the greatest possible illuminative effect. Said tubular .tire-tile preferably consists of two parts, as shownto wit, the already-described deliector proper, 24, and a supported upper section or bushing, 25, which lines the flue, in the manner shown.

The deflector havingI at lower end a material of a non-conductive character and a bushing or sleeve placed above, as shown in the drawin Yery neeessary. The advantages ol having these in two parts are, llrst,to allow for expansion and contraetion otf the material, and, secondly, the)r are placed in the casing in such a way as to keep the delleater-holder eomparatirel)Y eool and lrce from the ehanee of getting too hot and causing the metal of said deiieetor-holder to scale and deposit in the globe, which without the said lmshing is bound to oecur. This feature ot my invention is most neet sar \f to the sueeesslul working ol' a lamp haring with a downward [lame a central upward draft.

A collar, 213, on the shell has a pintle, 2T, for a hook, 2S, that extends t'rom the holder 29 otl the inverted glass globe or bulb Si). A button, Ill, on the other side ot the holder, engiglng in a notch of the collar, l'astens the holder, and with it the out turned [lange olf the globe, in the manner rcpresentml. An asbestus gasket, 3l, between the eollar 2li and the globe-ilange .2325 serves 'to cushion said flange and to exclude air. A jacket, 35, operates to retain the [lue heat, and by this and the added height ot' the chimney to increase draft-suction. Such conservation ot ilue heat furthermore secures efficient preheating of the entering A coping, 34", prevents direet contact ol' the products ot Combustion with the exposed portions of the gas-fixtures.

An annular register, 3T, capable ot' cir eumlerential adjustment to either the position shown i Fig. VII, in which, the registerports being opposite the dralt-openings 20, the dratt-a1r has tree entranee thereto, or the position shown in Fig. VIH, in which, the iinperforate portions ot" the register beine` opposed to said openings, ille dra't't-air is coinpelled to take nircuitons paths. 'lhe eondiealni tion shown in Fig. YU is adapted lor i l l weather or for indoor use. The eondition shown in Fig. Vlll is adapted for outdoor use in gusty weather.

To taeilitate lighting, the glass globe, instead ot" being wholly closed, has a funnellormed bottom, 259, for the insertion of a lighted match, which being withdrawn an automatica-lly-aeting glass ball or valve, At0, eloses the orifice.

ln out-oldoor use my lamps are provided with a con ical or other suitable hood, tl,whioh serves to protect, the globe :from Contact of hail and rain and to relleet the light.

My above-described lamp is susceptible of various modification For example, the governor, the Coping, and the flexible union ma7 be omitted, as in the forni shown in Fig. Xl; or other forms ol flexible joint may be substituted tor the ball and soeket, as shown in Fig. ll. This burner-ring l 1na7 be Counterbored to receive liningl tubes or bushings 42 ot' lava or other refractory substance of slow thermal conductivity, in order to prevent transmission of destructive heat to the burner-tubes 13.

The lamp may7 be built up ot' pieces secured together, as represented, or in any other manner that will enable ready dismemberment tor examination, cleansing, or repair.

l Claim as new and of my invention- The combination of the ring l5, theburnertubes 13, the lara tips 18, and the bushing 4:2, composed ot' lava or other refractory7 non-oonductor.

In testimony set my hand.

ol which invention I hereunto JOHN FRANKLIN.

ll'itnesses:

(lino. ll. .lxilon'n Jeux Douems. 

